64427227 has 4 divisors (see below), whose sum is σ = 64934656. Its totient is φ = 63919800.

The previous prime is 64427219. The next prime is 64427239. The reversal of 64427227 is 72272446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64427227 - 2³ = 64427219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64427192 and 64427201.

It is not an unprimeable number, because it can be changed into a prime (64407227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253524 + ... + 253777.

It is an arithmetic number, because the mean of its divisors is an integer number (16233664).

Almost surely, 2^64427227 is an apocalyptic number.

64427227 is a deficient number, since it is larger than the sum of its proper divisors (507429).

64427227 is a wasteful number, since it uses less digits than its factorization.

64427227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507428.

The product of its digits is 37632, while the sum is 34.

The square root of 64427227 is about 8026.6572743577. The cubic root of 64427227 is about 400.8880830620. Note that the first 3 decimals are identical.

It can be divided in two parts, 6442722 and 7, that multiplied together give a palindrome (45099054).

The spelling of 64427227 in words is "sixty-four million, four hundred twenty-seven thousand, two hundred twenty-seven".